From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: sata_nv + ADMA + Samsung disk problem Date: Tue, 14 Aug 2007 18:30:28 +0900 Message-ID: <46C17634.2040504@gmail.com> References: <20070808120804.GB5257@boogie.lpds.sztaki.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from wa-out-1112.google.com ([209.85.146.183]:47443 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753930AbXHNJah (ORCPT ); Tue, 14 Aug 2007 05:30:37 -0400 Received: by wa-out-1112.google.com with SMTP id v27so2127214wah for ; Tue, 14 Aug 2007 02:30:36 -0700 (PDT) In-Reply-To: <20070808120804.GB5257@boogie.lpds.sztaki.hu> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Gabor Gombas Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Gabor Gombas wrote: > Hi, > > Since I have upgraded to 2.6.22.1 from 2.6.20 I have problems with > Samsung disks. Sometimes the disks stall for about half a minute and > then I have these messages in the logs: > > Aug 6 20:10:11 twister kernel: ata7: EH in ADMA mode, notifier 0x0 notifier_error 0x0 gen_ctl 0x1501000 status 0x400 next cpb count 0x0 next cpb idx 0x0 > Aug 6 20:10:12 twister kernel: ata7: CPB 0: ctl_flags 0x9, resp_flags 0x0 > Aug 6 20:10:12 twister kernel: ata7: timeout waiting for ADMA IDLE, stat=0x400 > Aug 6 20:10:12 twister kernel: ata7: timeout waiting for ADMA LEGACY, stat=0x400 > Aug 6 20:10:12 twister kernel: ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen > Aug 6 20:10:12 twister kernel: ata7.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0 > Aug 6 20:10:12 twister kernel: res 40/00:00:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout) > Aug 6 20:10:12 twister kernel: ata7: soft resetting port > Aug 6 20:10:12 twister kernel: ata7: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > Aug 6 20:10:12 twister kernel: ata7.00: configured for UDMA/133 > Aug 6 20:10:12 twister kernel: ata7: EH complete > Aug 6 20:10:12 twister kernel: sd 6:0:0:0: [sdc] 488397168 512-byte hardware sectors (250059 MB) > Aug 6 20:10:12 twister kernel: sd 6:0:0:0: [sdc] Write Protect is off > Aug 6 20:10:12 twister kernel: sd 6:0:0:0: [sdc] Mode Sense: 00 3a 00 00 > Aug 6 20:10:12 twister kernel: sd 6:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA > Aug 6 20:20:25 twister kernel: ata8: EH in ADMA mode, notifier 0x0 notifier_error 0x0 gen_ctl 0x1501000 status 0x400 next cpb count 0x0 next cpb idx 0x0 > Aug 6 20:20:25 twister kernel: ata8: CPB 0: ctl_flags 0x9, resp_flags 0x0 > Aug 6 20:20:25 twister kernel: ata8: timeout waiting for ADMA IDLE, stat=0x400 > Aug 6 20:20:25 twister kernel: ata8: timeout waiting for ADMA LEGACY, stat=0x400 > Aug 6 20:20:25 twister kernel: ata8.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen > Aug 6 20:20:25 twister kernel: ata8.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0 > Aug 6 20:20:25 twister kernel: res 40/00:00:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout) > Aug 6 20:20:25 twister kernel: ata8: soft resetting port > Aug 6 20:20:25 twister kernel: ata8: SATA link up 3.0 Gbps (SStatus 123 SControl 300) > Aug 6 20:20:25 twister kernel: ata8.00: configured for UDMA/133 > Aug 6 20:20:25 twister kernel: ata8: EH complete > Aug 6 20:20:25 twister kernel: sd 7:0:0:0: [sdd] 488397168 512-byte hardware sectors (250059 MB) > Aug 6 20:20:25 twister kernel: sd 7:0:0:0: [sdd] Write Protect is off > Aug 6 20:20:25 twister kernel: sd 7:0:0:0: [sdd] Mode Sense: 00 3a 00 00 > Aug 6 20:20:25 twister kernel: sd 7:0:0:0: [sdd] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA > > I also have two Maxtor disks on the same controller but they are working > correctly in ADMA mode. I now disabled ADMA mode and that seems to help. Hmmm... That's timeout on cache flush, indicative of failing disk. Please post the result of 'smartctl -a /dev/sdc'. -- tejun